I am now looking into purchasing a 2003 F150 4x4 ftx extended cab truck with the 5.4L V8. I plan on lifting it 4in and am going to put 35x12.5's under it. My only question is... Is it possible to be able to mount 15x8 or 15x10 rims onto that 2003 F150? If so what backspacing would be required to do it?

 

No 15" wheels after 1996. Otherwise, 35" tires should be fine with 4" lift.

 

RIght. I'd use a 10 inch wide wheel with 4.5 inches of backspacing.